CCI's Quiet 22 round produces a report that is 1/4 the perceived noise level compared to standard velocity 22 LR rounds, making this round perfect for backyard plinking and youth shooting. This round is ideal for shooters using bolt-actions or single-shot rifles (but is perfectly safe in semi-automatics although it might not completely cycle the action). This ammunition is a perfect choice for shooting through your favorite rimfire suppressor. CCI Quiet ammunition is new production and non-corrosive. Box of 50 rounds.